diff --git a/wp-admin/load-scripts.php b/wp-admin/load-scripts.php
index 8a0ee3c17f..e3d6da2fc3 100644
--- a/wp-admin/load-scripts.php
+++ b/wp-admin/load-scripts.php
@@ -30,8 +30,6 @@ require( ABSPATH . 'wp-admin/includes/noop.php' );
 require( ABSPATH . WPINC . '/script-loader.php' );
 require( ABSPATH . WPINC . '/version.php' );
 
-$compress       = ( isset( $_GET['c'] ) && $_GET['c'] );
-$force_gzip     = ( $compress && 'gzip' == $_GET['c'] );
 $expires_offset = 31536000; // 1 year
 $out            = '';
 
@@ -61,16 +59,5 @@ header( 'Content-Type: application/javascript; charset=UTF-8' );
 header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', time() + $expires_offset ) . ' GMT' );
 header( "Cache-Control: public, max-age=$expires_offset" );
 
-if ( $compress && ! ini_get( 'zlib.output_compression' ) && 'ob_gzhandler' != ini_get( 'output_handler' ) && isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) {
-	header( 'Vary: Accept-Encoding' ); // Handle proxies
-	if ( false !== stripos( $_SERVER['HTTP_ACCEPT_ENCODING'], 'deflate' ) && function_exists( 'gzdeflate' ) && ! $force_gzip ) {
-		header( 'Content-Encoding: deflate' );
-		$out = gzdeflate( $out, 3 );
-	} elseif ( false !== stripos( $_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip' ) && function_exists( 'gzencode' ) ) {
-		header( 'Content-Encoding: gzip' );
-		$out = gzencode( $out, 3 );
-	}
-}
-
 echo $out;
 exit;
diff --git a/wp-admin/load-styles.php b/wp-admin/load-styles.php
index 82dacef60a..d6c5afc330 100644
--- a/wp-admin/load-styles.php
+++ b/wp-admin/load-styles.php
@@ -29,8 +29,6 @@ if ( empty( $load ) ) {
 	exit;
 }
 
-$compress       = ( isset( $_GET['c'] ) && $_GET['c'] );
-$force_gzip     = ( $compress && 'gzip' == $_GET['c'] );
 $rtl            = ( isset( $_GET['dir'] ) && 'rtl' == $_GET['dir'] );
 $expires_offset = 31536000; // 1 year
 $out            = '';
@@ -82,16 +80,5 @@ header( 'Content-Type: text/css; charset=UTF-8' );
 header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', time() + $expires_offset ) . ' GMT' );
 header( "Cache-Control: public, max-age=$expires_offset" );
 
-if ( $compress && ! ini_get( 'zlib.output_compression' ) && 'ob_gzhandler' != ini_get( 'output_handler' ) && isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) {
-	header( 'Vary: Accept-Encoding' ); // Handle proxies
-	if ( false !== stripos( $_SERVER['HTTP_ACCEPT_ENCODING'], 'deflate' ) && function_exists( 'gzdeflate' ) && ! $force_gzip ) {
-		header( 'Content-Encoding: deflate' );
-		$out = gzdeflate( $out, 3 );
-	} elseif ( false !== stripos( $_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip' ) && function_exists( 'gzencode' ) ) {
-		header( 'Content-Encoding: gzip' );
-		$out = gzencode( $out, 3 );
-	}
-}
-
 echo $out;
 exit;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 75a5997ed7..08af2c4caa 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-43579';
+$wp_version = '5.0-alpha-43580';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.